I tried this way, but it didnt changed?
ImageIcon icon = new ImageIcon("C:\\Documents and Settings\\Desktop\\favicon(1).ico");
frame.setIconImage(icon.getImage());
Better use a .png file; .ico is Windows specific. And better to not use a file, but a class resource (can be packed in the jar of the application).
URL iconURL = getClass().getResource("/some/package/favicon.png");
// iconURL is null when not found
ImageIcon icon = new ImageIcon(iconURL);
frame.setIconImage(icon.getImage());
Though you might even think of using setIconImages for the icon in several sizes.
Try putting your images in a separate folder outside of your src folder. Then, use ImageIO to load your images. It should look like this:
frame.setIconImage(ImageIO.read(new File("res/icon.png")));
Finally I found the main issue in setting the jframe icon. Here is my code. It is similar to other codes but here are few things to mind the game.
this.setIconImage(new ImageIcon(getClass().getResource("Icon.png")).getImage());
1) Put this code in jframe WindowOpened event
2) Put Image in main folder where all of your form and java files are created e.g.
src\ myproject\ myFrame.form
src\ myproject\ myFrame.java
src\ myproject\ OtherFrame.form
src\ myproject\ OtherFrame.java
src\ myproject\ Icon.png
3) And most important that name of file is case sensitive that is icon.png won't work but Icon.png.
this way your icon will be there even after finally building your project.
This works for me.
frame.setIconImage(Toolkit.getDefaultToolkit().getImage(".\\res\\icon.png"));
For the export jar file, you need to configure the build path to include the res folder and use the following codes.
URL url = Main.class.getResource("/icon.png");
frame.setIconImage(Toolkit.getDefaultToolkit().getImage(url));
Yon can try following way,
myFrame.setIconImage(Toolkit.getDefaultToolkit().getImage("Icon.png"));
Here is the code I use to set the Icon of a JFrame
import javax.imageio.ImageIO;
import java.io.File;
import java.io.IOException;
try{
setIconImage(ImageIO.read(new File("res/images/icons/appIcon_Black.png")));
}
catch (IOException e){
e.printStackTrace();
}
Just copy these few lines of code in your code and replace "imgURL" with Image(you want to set as jframe icon) location.
JFrame.setDefaultLookAndFeelDecorated(true);
//Create the frame.
JFrame frame = new JFrame("A window");
//Set the frame icon to an image loaded from a file.
frame.setIconImage(new ImageIcon(imgURL).getImage());
I'm using the following utility class to set the icon for JFrame and JDialog instances:
import java.awt.*;
import java.io.IOException;
import java.io.InputStream;
import java.net.URISyntaxException;
import java.util.Scanner;
public class WindowUtilities
{
public static void setIconImage(Window window)
{
window.setIconImage(Toolkit.getDefaultToolkit().getImage(WindowUtilities.class.getResource("/Icon.jpg")));
}
public static String resourceToString(String filePath) throws IOException, URISyntaxException
{
InputStream inputStream = WindowUtilities.class.getClassLoader().getResourceAsStream(filePath);
return toString(inputStream);
}
// http://stackoverflow.com/a/5445161/3764804
private static String toString(InputStream inputStream)
{
try (Scanner scanner = new Scanner(inputStream, "UTF-8").useDelimiter("\\A"))
{
return scanner.hasNext() ? scanner.next() : "";
}
}
}
So using this becomes as simple as calling
WindowUtilities.setIconImage(this);
somewhere inside your class extending a JFrame.
The Icon.jpg has to be located in myproject\src\main\resources when using Maven for instance.
I use Maven and have the structure of the project, which was created by entering the command:
mvn archetype:generate
The required file icon.png must be put in the src/main/resources folder of your maven project.
Then you can use the next lines inside your project:
ImageIcon img = new ImageIcon(getClass().getClassLoader().getResource("./icon.png"));
setIconImage(img.getImage());
My project code is as below:
private void setIcon() {
setIconImage(Toolkit.getDefaultToolkit().getImage(getClass().getResource("/slip/images/cage_settings.png")));
}
frame.setIconImage(new ImageIcon(URL).getImage());
/*
frame is JFrame
setIcon method, set a new icon at your frame
new ImageIcon make a new instance of class (so you can get a new icon from the url that you give)
at last getImage returns the icon you need
it is a "fast" way to make an icon, for me it is helpful because it is one line of code
*/
public FaceDetection() {
initComponents();
//Adding Frame Icon
try {
this.setIconImage(ImageIO.read(new File("WASP.png")));
} catch (IOException ex) {
Logger.getLogger(FaceDetection.class.getName()).log(Level.SEVERE, null, ex);
}
}'
this works for me.
Related
I've got an issue with my .jar file. It runs fine in Eclipse but as soon as I export it, it won't open. I've checked the manifest file and it looks like it's okay.
I've tried exporting it as a runnable jar, as well as just using the jar builder. Nothing worked.
I've tried to run it in command prompt and it says it can't access the jar file... I've searched around a while on here and haven't found an answer yet.
I'm not sure what I'm doing wrong. The only thing I can think of is I'm not getting my images correctly.
I'm using .png files for the program's sprites and here's an example of how I get them for my program.
This code begins the building of a level from a .png file.
public class SpawnLevel extends Level{
public SpawnLevel(String path) {
super(path);
}
protected void loadLevel(String path){
try{
System.out.println("classpath is: " + System.getProperty("java.class.path"));
BufferedImage image = ImageIO.read(SpawnLevel.class.getResource(path));
int w = width = image.getWidth();
int h = height= image.getHeight();
tiles = new int[w*h];
image.getRGB(0,0,w,h,tiles,0,w);
}catch(IOException e){
e.printStackTrace();
System.out.println("EXEPTION FOUND!!! Could not load the level file!");
}
}
protected void generateLevel(){
System.out.println("Tiles: " + tiles[0]);
}
}
I've made one other .jar before for another program and didn't have a problem. Any help would be greatly appreciated.
If it helps, I used this code to display the resource folder path information.
System.out.println("classpath is: " + System.getProperty("java.class.path"));
Here's what my current path for my resources folder looks like. Before I export it from eclipse.
classpath is: C:\Users\name\workspace\Rpg_Game\bin;C:\Users\name\workspace\Rpg_Game\res
After I export to .jar
classpath is: 2ndGameTest.jar
If your images are in your resources package in the src The path you should be using for getResource() is something like
class.getResource("/resources/levels/level1.png")
UPDATE with test program
import java.awt.Image;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
public class TestImage {
public static void main(String[] args) throws IOException {
Image image = ImageIO.read(TestImage.class.getResource("/resources/images/image.png"));
ImageIcon icon = new ImageIcon(image);
JLabel label = new JLabel(icon);
JOptionPane.showMessageDialog(null, label);
}
}
Problem: Java applet can't load resources located inside its jar when run locally on windows platforms. The same applet can load the resources if it is launched from a web server instead of launched locally or if it's launched locally on a linux system. In all cases the applet is launched using an applet tag.
Steps to reproduce
1) Build applet class code below and create a jar containing the following:
TestApplet.class
iconimg.png
test.html
META-INF folder (standard manifest with one line: "Manifest-Version: 1.0")
Here's a link to the image png file I used:
http://flexibleretirementplanner.com/java/java-test/iconimg.png
The file test.html has one line:
<h1>Text from test.html file</h1>
2) create launch.html in same folder as test.jar as follows:
<html><center><title>Test Applet</title><applet
archive = "test.jar"
code = "TestApplet.class"
name = "Test Applet"
width = "250"
height = "150"
hspace = "0"
vspace = "0"
align = "middle"
mayscript = "true"
></applet></center></html>
3) With test.jar in the same local folder as launch.html, click on launch.html
4) Notice that getResource() calls for imgicon.png and test.html both return null.
5) Upload launch.html and test.jar to a web server and load launch.html and notice that the resources are found.
TestApplet.java
import java.applet.AppletContext;
import java.io.IOException;
import java.net.URL;
import javax.swing.ImageIcon;
import javax.swing.JApplet;
import javax.swing.JEditorPane;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class TestApplet extends JApplet {
public TestApplet() {
try {
jbInit();
} catch (Exception ex) {
ex.printStackTrace();
}
}
public void init() {
JPanel topPanel = new JPanel();
JLabel iconLabel;
URL url = TestApplet.class.getClassLoader().getResource("iconimg.png");
if (url != null)
iconLabel = new JLabel(new ImageIcon(url));
else
iconLabel = new JLabel("getResource(iconimg.png)==null");
topPanel.add(iconLabel);
URL url2;
url2 = TestApplet.class.getClassLoader().getResource("test.html");
if (url2 == null) {
JLabel errorLabel = new JLabel("getResource(test.html) == null");
topPanel.add(errorLabel);
} else {
try {
JEditorPane htmlPane = new JEditorPane(url2);
topPanel.add(htmlPane);
} catch (IOException ioe) {
System.err.println("Error displaying " + url2);
}
}
getContentPane().add(topPanel);
}
private void jbInit() throws Exception { }
}
Oracle has decided to modify the behavior of getDocumentBase(), getCodeBase() and getResource() because security reasons since 1.7.0_25 on Windows: http://www.duckware.com/tech/java-security-clusterfuck.html
It seems there is a lot of discussion about this change because it breaks some important valid and secure use cases.
After further research and discovering that this is a windows-only problem, I'm calling this one answered.
It's almost certainly a java 1.7.0.25 bug. The applet runs fine from a web server and also runs fine locally on a virtual Ubuntu system (using VirtualBox on windows). Hopefully the bug report i submitted will be helpful to the java folks.
Thanks for the responses. Btw, it was Joop's comment about case sensitivity that spurred me to test a linux system just for kicks. Thanks for that!
I am making a card game, and it's almost done. The last thing I want to do is play some background music. Now if I copy the file into the default package and make a single jar file of the game, will the music play on all computers? Currently, on my PC it's running without any problem by giving a specific path for the file like "C:\\samp.wav";. But I am worried that if I make a jar file and run it on another PC it won't work properly. I think there will be a FileNotFoundException. Am I right or wrong?
For the card's image I am using this line:
jLabel1.setIcon(new javax.swing.ImageIcon(getClass().getResource("/1.jpg")));
Those pictures I have inserted into my default package. I want to do the same for the music file, but how? I am using NetBeans.
You should include the wav file inside your application jar. This way you won't have to manage the copy of the file in the user's file system (keep in mind that, for example, in UNIX, Mac, etc. you can't access to the hard drive through C:/...).
For example, if you place the wav file in the root of the app jar (app.jar/samp.wav):
InputStream is = getClass().getClassLoader().getResourceAsStream("samp.wav");
or, if you had a "sounds" directory in the app jar root (app.jar/sounds/samp.wav):
InputStream is = getClass().getClassLoader().getResourceAsStream("sounds/samp.wav");
Check this post for extra information about playing wav files with Java (though for your question, I think you have already solved this problem). Consider as well playing it in a separate thread. Check also this web for examples about managing media files in Java.
import javax.swing.*;
import sun.audio.*;
import java.awt.event.*;
import java.io.*;
public class Sound {
public static void main(String[] args)
{
JFrame frame = new JFrame();
frame.setSize(200,200);
JButton button = new JButton("Click me");
frame.add(button);
button.addActionListener(new AL());
frame.setVisible(true);
}
public static class AL implements ActionListener{
public final void actionPerformed(ActionEvent e){
music();
}
}
public static void music(){
AudioPlayer MGP = AudioPlayer.player;
AudioStream BGM;
AudioData MD;
ContinuousAudioDataStream loop = null;
try{
BGM = new AudioStream(new FileInputStream("C:\\test\\ha.wav"));
MD = BGM.getData();
loop = new ContinuousAudioDataStream(MD);
}catch(IOException error){
System.out.print("file not found");
}
MGP.start(loop);
}
}
I'm trying to build a really basic program that will alternate between two pictures depending on which item from a dropdown box is selected. This is the code I'm trying to run, but I keep getting an error saying:
Exception in thread "main" java.lang.NullPointerException
at javax.swing.ImageIcon.<init>(ImageIcon.java:181)
at Gui.<init>(Gui.java:10)
at Apples.main(Apples.java:7)
The images are in the src file.
Does anyone know what I am doing wrong??
Thanks,
Ravin
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Gui extends JFrame{
private JComboBox box;
private JLabel picture;
private static String [] filename = {"Ravinsface.png", "Wojs face.png"};
private Icon[] pics = {new ImageIcon(getClass().getResource(filename[0])), new ImageIcon(getClass().getResource(filename[1]))};
public Gui(){
super("The Title");
setLayout(new FlowLayout());
box = new JComboBox(filename);
box.addItemListener(
new ItemListener(){
public void itemStateChanged(ItemEvent event){
if(event.getStateChange()==ItemEvent.SELECTED);
picture.setIcon(pics[box.getSelectedIndex()]);
}
}
);
add(box);
picture = new JLabel(pics[1]);
add(picture);
}
}
Use getClass().getClassLoader().getResource(String)
/e1 I put an explanation of the different getResource(String) methods on the other answer.
It looks like one (or more) of the arguments you are passing into your ImageIcon constructor are null. This is because the resource is not being found here:
private Icon[] pics = {new ImageIcon(getClass().getResource(filename[0])), new ImageIcon(getClass().getResource(filename[1]))};
Why aren't you just using
new ImageIcon(String filename)
? I'm not 100% sure how getResource works, never having used it.
do this:
you must put your .png
beside your .class files
(in project_name/bin)
then your files path can recognize
then it will works
remember you are using class loader so if you put images beside .class files it will be correct
I was trying out the method of creating a background music for a java program, but it displayed an IO excedption error when i clicked the play button.
package javaentertainment;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.FileInputStream;
import java.io.IOException;
import javax.swing.*;
import sun.audio.AudioData;
import sun.audio.AudioPlayer;
import sun.audio.AudioStream;
public class Music
{
public static void main(String args[])
{
JFrame frame=new JFrame();
frame.setSize(100,100);
JButton button=new JButton("P L A Y");
frame.add(button);
button.addActionListener(new AL());
frame.show();
}
public static class AL implements ActionListener
{
public void actionPerformed(ActionEvent e) {
music();
}
}
public static void music()
{
AudioPlayer MGP=AudioPlayer.player;
AudioStream BGM;
AudioData MD;
ContinousAudioDataStream loop=null;
try
{
BGM = new AudioStream(new FileInputStream("Vision.wmv"));
MD=BGM.getData();
loop=new ContinousAudioDataStream(MD);
}
catch (IOException ex)
{
System.out.println(ex);
}
MGP.start(loop); // word loop was underlined by netbeans
}
}
When I run the program and click on play it displays the following error,
java.io.IOException: could not create audio stream from input stream
You should use JMF (Java Media Framework). For your interest: The list of accepted formats can be found here.
In short, it supports AIFF, AVI, GSM, MVR, MID, MPG, MP2, MOV, AU and WAV files.
But there is a workarond as stated here:
On a side note, if you add a
mime-setting in JMFRegistry to map
Windows Media content (such as .asf
and .wmv) to the content-type
"video/mpeg", JMF can actually play
Windows Media or any other DirectShow
file (and only file - http wont work).
I would be surprised if Java can hand Windows Media format samples - try converting the .wmv to a .wav file and see if it works then.
Just got this, as well.
java.io.IOException: could not create AudioData object
Appears from the source [1] that this means that "your audio file is size > 1 MB" and it doesn't like that for whatever reason. Maybe a bug [?] that they don't accomodate for this.
One work-around might be to use JMF instead, as suggested, if you want looping to work for large files anyway.
[1] http://www.docjar.com/docs/api/sun/audio/AudioStream.html#getData